Bag frame and method of making it



July 2, 1935. w. .1. KLEMP BAG FRAME AND METHOD OF MAKING IT Filed July1-3, 1934 2 Sheets-Sheet l 12 J17 9 4 I ""T'ILLYI- IIIII'IIIII'iZ A:I'ZZI' 2 1% m BY WORNEY July 2, 1935. w. J. KLEMP 2,006,925

BAG FRAME AND METHOD OF MAKING IT Filed July 15, 1934 2 Sheets-Sheet 2INVENTOR W BY M I A ORNEY Patented July 2, 1935 PATENT OFFICE BAG FRAMEAND METHOD OF MAKING IT William J.

Klemp, Maplewootl, N. J., assignor to Karl Oswald, Newark, N. J.

Application July 13, 1934, Serial No. 734,921

6 Claims. (o1. 153 'g This invention relates in general to frames forladies hand bags, purses, pocket books and the like, the invention beingparticularly directed to the structure of the frame for the mouth oropening of the bag.

A frame of this general character includes two approximately U-shapedsections which are pivotally connected together at the extremities oftheir arms and have the bag covering, such as 101': leather orcomposition fabric secured thereto, so

that upon relative pivotal movement of the sections, the bag may beopened and closed. Inasmuch as such frames are subjected to hard usage,particularly to repeated and severe strains in 1; opening and closingof, the bags, it is highly desirable that the frames be very strong, butat the same time it is desirable thatthe frames be light in weight sothat they shall not constitute too great a burden to the personscarrying them. It has been customary in the art to make such frames byspot welding or riveting pieces of metal together, or by bending metaland then riveting or spot welding additional pieces at the bends toreenforce the frame sections at the bends or 25, angles thereof. Suchstructures and methods are expensive both in cost of materials andlabor.

An important object of my invention is to provide a novel and improvedbag frame and method of making it whereby the frame shall be formed ofone piece of sheet material, so as toobviate the necessity for spotwelding or riveting, and shall be strong and durable in use andinexpensive to manufacture.

Another object is to provide a novel and im- 35; proved blank for a bagframe section consisting of a single strip of. sheet material which canbe easily and quickly fabricated by simple bending operations into acomplete strong durable and inexpensive frame section. I

Other objects, advantages and results of the invention will appear fromthe following description, when read in connection with the accompanyingdrawings. v

Referring to said drawings in which corres- 45 ponding and like partsare designated throughout the several views by the same referencecharacters,

Figure 1 is a plan View of a blank for a bag frame section embodying myinvention.

Figure 2 is an edge elevention thereof.

Figure 3 is a plan view showing the frame section in the form in whichit appears after the first series of bending operations on the blank.Figure 4 is a side elevation of the structure shown in Figure 3.

Figure 5 is a-fragmentary longitudinal vertical sectionalview on the'1ine i.5--5 of Figure 3.

Figure 6'is a transverse vertical sectional view on the line'i--5' ofFigure 3. a

Figure 7 is an enlargedfragmentary'perspec- 5' tive viewof the .channelformed from the blank prior to'bending of the channel;-

Figure 8 is. a top planview of two of the channels pivotally connectedtogether after having been subjected to the first transverse bending op-1B eration. l. I

Figure 9 'is a side elevation of the structure shown in Figure 8'. l H

Figure '10 is "a: top plan view of the completed bagf-rame. a

Figure 11 is a side elevation thereofshowing a portion of the bag coverapplied tothe frame.

Figures 1-2 and 13 are enlarged fragmentary vertical sectional views'onthe lines 'l2|2 of Figure l0 showingthe successive stepsin bending the20 channelitransver'sely. 1 v I g Figure 14 is a similar viewon the lineI 3 l3 ofl lgure'lqand' I v Figure 15 is a fra'gmentaryperspective viewshowing the manner of attaching the cover to the frame.*Specificallydescribing the illustrated embodiment of the invention,'the' bag' frame comprises twoidentical sections and B' which areapproximately lJ-shaped, each including a main portion C and twoendportions D approximately perpendicular to the main portions. Theextremities'of the end portions -D are pivotally connected at E'asbysuitable hollow rivets so that the two sectiensm'ay' swing toward andfrom each other. V I Each frame section is for-med of a blank I ofbendable sheet material for example sheet metal, which has pivot ears2a: its extremities to receive' the hollow' rivetsE.' One longitudinaledge 40 of the blank has two V-shaped notches 3 spaced] longitudinallythereofpand two openings 4 are formed in the blank alinement with eachnotch 3 transversely of the strip, said openings also being spaced from'each other in alinementtransversely of the strip. Preferably theopenings are triangular as shown, and the adjacent sides 5 of theopenings of each pair are parallel to each other and extendlongitudinally of the strip as clearly shown inFigure 1. After the blankhas been formed as described, it is bent longitudinally along the innerends of the notches 3 as indicated at 6 and along the edges of theopenings 4 adjacent the notches as at 1, and then along the adjacentsides 5 of the openings as at 8 and 9 respectively. The blank is thusformed into a channeled strip having two channels provided with a commonside wall and facing in opposite directions, as clearly shown in Figures6 and '7. The openings 4 are disposed in opposite relation in the sidewalls of one of the channels and adjacent the base ll of the channel,while the notches 3 are disposed in the outer side wall of the otherchannel with their inner portions terminating adjacent the base I! ofsaid channel. The notches 3 and openings 4 are thus disposed inalinement or juxtaposition transversely of the strip.

Two of the strips are then connected together by the hollow rivets E andarranged in side by side relation as shown in Figure 8. The two stripsmay then be simultaneously bent transversely at the openings 4 andnotches 3 as shown in Figure 9 so as to form in effect a one-piecemitered joint. During this bending operation, the portion of the base llof the channel having the openings 4 is doubled as shown at I3 on Figure12, along the adjacent sides of the openings 4', so that the other sidesof the openings are brought intoclose relation, and the sides of thenotches 3 are brought together as shown in Figures 12 and 14respectively. This bending; operation forms one of the end portions D ofthe bag frame and the other end portion is formed by bending the stripin the same manner at the other openings 4 and notches 3. Thereafter,the doubled portions l3 ofjthe base. ll of the channelare bent orclinched tightly against the adjacent areas of the base of the channelas indicated'at i4 in Figure 13. This completes the bag frame.

, From the foregoing, it will be observed that the bagframe comprisestwo identical sections, each ofwhich is formed of a single piece ofsheet material, and that the frame can be formed easily and quickly andinexpensively by a small number of simple stamping and bendingoperations. The junctures of the main portions'C and the end portions Dof the frame sections .are reenforced by thedoubled portions l4 of thebases of the channels and effectually resist bending of the end portionsrelative to the main portions of the frame sections under the mostsevere strains incident to use of a bag. There is no spot welding orriveting required, nor are there any projections or rough edges tohinder the application of the cover to the frame. A cover may be appliedto the bag frame in the usual way, for example by turning under the edgeof acovering piece F as indicated at G in Figure 15 and clamping saidturned edge in the outer channel of the frame section.

1 While I have shown and described the inventionas embodied in certainspecific details of structure it should be understood that this isprimarily for illustrating the principles of the invention and that manymodifications and changes may be made in the details of structurewithout departing from the spirit or scope of the invention. Y

Having thus described my invention, what I claim is:

1. A blank for a bag frame section comprising a strip of bendable sheetmaterial having spaced V-shaped notches on one longitudinal edge and apair of triangular openings in alinement with and spaced from each notchand each other transversely of said strip, each triangular opening ofeach pair having one side parallel to one side of the other opening ofthe same pair and extending longitudinally of the strip.

2. The steps in the method of making a bag frame section, consisting informing a notch in one longitudinal edge of a strip of ductile material,forming two openings in said strip in alinement with and spaced fromsaid notch and each other transversely of the strip, bending the stripalong longitudinal lines between said notch and one of said openings andalong the adjacent sides of said openings to form two channels having acommon wall and facing in opposite directions, and then bending saidstrip transversely through saidopenings and said notch.

3. The method set forth in claim 2 wherein said notch is made ofV-shape, and each of said openings is made triangular with one sidethereof parallel to one side of the other and extending longitudinallyof the strip.

4. The steps in the method of making a bag frame section, consisting informing a notch in one longitudinal edge of a strip of ductile material,forming two openings in said strip in alinement with and spaced fromsaid notch and each other transversely of the strip, bending the stripalong longitudinal lines between said notch and one of said openings andalong the adjacent sides of said openings to form two channels having acommon wall and facing in opposite directions, then bending said striptransversely through said openings and said notch, and then bendingagainst the base of the corresponding channel the portion of thematerial between said openings which has been displaced by saidtransverse bending of the strip.

5. The method set forth in claim 2 wherein said notch is made ofV-shape, and each of said openings is made triangular with one sidethereof parallel to one side of the other and extending longitudinallyof the strip, and with the additional step of bending against the baseof the corresponding channel the portion of the material between saidopenings which has been displaced by said transverse bending of thestrip.

6. A bag frame section of sheet material having a main portion and twoend portionsdisposed in angular relation to the main portion and iii--cluding two channels having a common wall and facing in oppositedirections, said common wall and the side walls of one channel havingmitering openings extending to the base of the channel at the juncturesof said end portions with said main-portion, the portions of the base ofsaid channel at said junctures being doubled and pressed against theadjacent areas of the base. and the side wall of the other channelhaving miteringnotches in alinement with said mitering openingstransversely of said channels.

. WILLIAM J. KLEMZP.

